Manually generate the default config yaml, remove most of the commandline arguments for synapse anticipating that people will use the yaml instead. Simpify implementing config options by not requiring the classes to hit the super class

synapse/config/voip.py

@@ -17,28 +17,21 @@ from ._base import Config
 
 class VoipConfig(Config):
 
-    def __init__(self, args):
-        super(VoipConfig, self).__init__(args)
-        self.turn_uris = args.turn_uris
-        self.turn_shared_secret = args.turn_shared_secret
-        self.turn_user_lifetime = args.turn_user_lifetime
+    def read_config(self, config):
+        self.turn_uris = config.get("turn_uris", [])
+        self.turn_shared_secret = config["turn_shared_secret"]
+        self.turn_user_lifetime = self.parse_duration(config["turn_user_lifetime"])
 
-    @classmethod
-    def add_arguments(cls, parser):
-        super(VoipConfig, cls).add_arguments(parser)
-        group = parser.add_argument_group("voip")
-        group.add_argument(
-            "--turn-uris", type=str, default=None, action='append',
-            help="The public URIs of the TURN server to give to clients"
-        )
-        group.add_argument(
-            "--turn-shared-secret", type=str, default=None,
-            help=(
-                "The shared secret used to compute passwords for the TURN"
-                " server"
-            )
-        )
-        group.add_argument(
-            "--turn-user-lifetime", type=int, default=(1000 * 60 * 60),
-            help="How long generated TURN credentials last, in ms"
-        )
+    def default_config(self, config_dir_path, server_name):
+        return """\
+        ## Turn ##
+
+        # The public URIs of the TURN server to give to clients
+        turn_uris: []
+
+        # The shared secret used to compute passwords for the TURN server
+        turn_shared_secret: "YOUR_SHARED_SECRET"
+
+        # How long generated TURN credentials last
+        turn_user_lifetime: "1h"
+        """